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Selfa SV108M.3.4-450
Selfa Brand review

SV108M.3.4-450

450 Wp N-type
ComparePV verdict

Middle of its segment, weak in heat

Rank 7,231 of 14,005
Compare panels Datasheet PDF
Power (Wp)
450
Weak · bottom 8%
Efficiency (%)
22.50
Typical · median 22.52%
Density (Wp/m²)
222.7
Typical · median 225.2
Temp (%/°C)
-0.300
Weak · bottom 5%
Weight (kg)
22.0
Typical · median 23.7 kg
Warranty (yrs)
30
Typical · median 30 yrs

The Selfa PREMIUM photovoltaic panel series is a technologically advanced solution that combines Polish engineering with the highest standards of resistance to harsh weather conditions. These panels are based on the innovative structure of Half-Cut cell technology, which significantly minimizes energy losses resulting from partial shading and lowers the module's operating temperature. A key distinguishing feature of the series is the use of a unique Self-Cleaning coating, which actively limits the accumulation of dust and pollutants, translating into higher energy yields in the long term without the need for frequent maintenance. Unlike mass-produced modules, the PREMIUM line places special emphasis on fire safety and the mechanical strength of the frame, making it an ideal choice for demanding prosumer installations and large commercial projects. Users gain a real benefit in the form of local technical support and full resistance to potential-induced degradation (PID), which guarantees power production stability for decades. Choosing this series is a conscious investment in components with increased resistance to extreme snow and wind loads, which in the variable Polish climate is a key selling point, effectively distinguishing these modules from cheaper, foreign competition.

Ranking

301 panels in the segment N-type 450-500 W
Metric This panel Median Position in segment Overall rank
Module efficiency 22.50% 22.52% Typical 4,222
Power density 222.7 225.2 Typical 5,496
Temperature coefficient -0.300 -0.290 Weak · bottom 5% 6,093
Weight per kWp 48.9 49.5 Typical 2,563
Performance warranty 30 yrs 30 yrs Typical 21
Colour key Strong - top 25% Typical - middle 50% Weak - bottom 25%

Price offers

1 from shops we track
Shop Country Price Per kWp Stock Offer updated Link to shop
PV-Sklep Poland 329.99 zł incl. VAT 733.31 zł/kWp In stock yesterday Visit shop

Signals from the data

0 positive · 1 caution
Best for

Residential, commercial and shaded-installations.

Not ideal for

Hot climates.

Watch-outs
-0.300 %/°C temperature coefficient

Bottom 5% of the N-type 450-500 W segment, against a median of -0.290. Ranked 6,093rd in the whole database.

Notes from the database
  • Efficiency of 22.5% matches the N-type 450-500W median
  • At 222.7 W/m² power density, roof space requirements are typical for N-type 450-500W panels
  • Temperature coefficient of -0.30%/°C matches the N-type 450-500W median
  • Weight of 22.0 kg (1.7 kg below N-type 450-500W median of 23.7 kg) allows easier transport and roof mounting
  • Ranked #4222 out of 14005 panels for efficiency in the database

Specifications

Open datasheet PDF
Nominal power (Pmax) 450 Wp Nameplate at 1000 W/m², 25 °C
Module efficiency 22.50 % Typical Segment median 22.52%
Vmpp · Impp 30.08 V · 14.96 A Operating point at max power
Voc · Isc 36.22 V · 15.80 A Sizes the string length
Max system voltage 1500 V Longer strings than 1000 V modules
Dimensions 1782×1134×30 mm · 2.02 m² of roof
Weight 22.0 kg Typical Typical · median 23.7 kg
Cells 108 · N-type Monocrystalline
Coefficient Pmax -0.300 %/°C Weak bottom 5% of its segment
Coefficient Voc · Isc -0.250 · 0.050 %/°C
NOCT 41 °C At 800 W/m², 20 °C ambient
Product warranty 20 years Hardware defects only
Performance warranty 30 years Typical median 30 yrs · median 30 yrs
End-of-warranty output 87.0 % Equals 392 W guaranteed
Degradation 1.00 → 0.41 % First year, then annual

Datasheet charts

Open datasheet PDF

Measured curves published by Selfa in this model's datasheet. A chart carrying a wattage was measured on that variant alone - only the ones that describe 450 Wp appear here. The rest cover the whole series.

Linear Power Warranty Linear Power Warranty Whole series Current-Voltage Characteristic Current-Voltage Characteristic Whole series

Simulations

Live - change any input
Lifetime output & value
30 years at 1200 kWh/kWp/year and €0.50 per kWh
Power in year 30
-
Lifetime energy
-
Energy value
-

Degradation from this panel's own datasheet figures. No inverter, soiling or shading losses.

Heat losses
-0.300 %/°C against a segment median of -0.290
-
Filter these
Size
Panel Power Eff. Temp. Weight Difference
Selfa SV108M.3.4-450 450 W 22.50% -0.300 22.0 kg You are here
AIKO-A495-MCE54Mw 495 W 24.80% -0.260 21.0 kg +45 W, cooler, +2.3 pp
AIKO-A490-MCE54Mw 490 W 24.50% -0.260 21.0 kg +40 W, cooler, +2.0 pp
LR7-54HJD-500M 500 W 24.50% -0.240 23.5 kg +50 W, cooler, +2.0 pp
CIPRO-TN9C54M-500W 500 W 24.50% -0.260 21.4 kg +50 W, cooler, +2.0 pp
GK-3-54HGb-500M 500 W 24.50% -0.260 21.4 kg +50 W, cooler, +2.0 pp
GCL-NR10R/54BGDF 500 W 24.50% -0.260 24.6 kg +50 W, cooler, +2.0 pp
SV108M.2.4-430 430 W 21.50% -0.300 22.0 kg -20 W, -1.0 pp
SV108M.2.4-440 440 W 22.00% -0.300 22.0 kg -10 W, -0.5 pp
LR7-54HJD-510M 510 W 25.00% -0.240 23.5 kg +60 W, cooler, +2.5 pp
LR7-54HJD-505M 505 W 24.70% -0.240 23.5 kg +55 W, cooler, +2.2 pp

Found 10 panels of the same or similar size to this one, within ±10 mm. See them here Found 1593 panels of the same or similar size to this one, within ±25 mm. See them here Found 1818 panels of the same or similar size to this one, within ±50 mm. See them here Found 3986 panels of the same or similar size to this one, within ±100 mm. See them here

Common questions

6 answered
What warranty comes with the Selfa PREMIUM panels and what does it cover?
The Selfa PREMIUM series carries a 20-year product warranty covering material and manufacturing defects, plus a 30-year linear power output warranty. The manufacturer guarantees that the panels will retain at least 80% of their rated power after 30 years. An added advantage is local technical support provided by a Polish manufacturer, which translates to faster warranty claims processing compared to brands operating from distant Asian markets.
What are the benefits of the Half-Cut PERC cell technology used in Selfa PREMIUM panels?
Half-cut cells are physically split in half, reducing internal resistance and lowering thermal losses. Combined with PERC technology, which reflects unused photons back into the cell for a second absorption pass, Selfa PREMIUM panels achieve higher conversion efficiency. In practice, this means better performance under partial shading, for example from a chimney or dormer window, and a lower cell operating temperature that extends the module's service life.
Can Selfa PREMIUM 550 Wp panels handle heavy snowfall and strong winds in Polish conditions?
Yes, the PREMIUM series is engineered with Poland's variable climate in mind. The manufacturer places particular emphasis on the mechanical strength of the frame, and the modules meet rigorous snow and wind load standards. This makes the panels a reliable choice for both pitched roof installations and ground-mounted systems in regions with significant snow accumulation or high wind exposure.
What is the Self-Cleaning coating on Selfa PREMIUM panels and does it actually work?
The Self-Cleaning coating is a hydrophobic treatment applied to the front glass that causes rainwater to collect dust and contaminants and carry them off the module surface. In practice, this reduces the need for manual cleaning, especially in areas with moderate rainfall. The effect is most pronounced at roof tilt angles above 15 degrees. It does not eliminate maintenance entirely, but it measurably reduces energy yield losses caused by soiling.
What is PID resistance and why does it matter for Selfa PREMIUM panels?
PID, or Potential Induced Degradation, is the gradual loss of module power caused by high system voltage, especially in high-humidity environments. Selfa PREMIUM panels are fully PID-resistant, which is critical for long-term prosumer and commercial installations. Without this protection, irreversible power losses can occur within just a few years of operation, significantly reducing the return on investment.
Are Selfa PREMIUM panels suitable for large commercial projects or only for residential use?
The PREMIUM series, with modules rated up to 550 Wp, is designed for both demanding prosumer installations and large-scale commercial projects. High per-module power output reduces the total number of modules needed, lowering balance-of-system and labor costs per MW. The elevated fire safety standards and mechanical durability make this series especially well-suited for projects with stricter technical and regulatory requirements, such as public or industrial buildings.
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